Riveting-machine



H. E. TRUMBULL.

.RIVETING MACHINE. APPLICATION FILED 050.13. 1918.

1,352,851, PatentedSeptfM, 1920.

3 SHEETS-SHEET I.

. a 3% $6 3 I Q 3 a g 3Q Inventor:

Jiarlowe E. Trumbull,

H. E. TRUMBULL.

RIVETING MACHINE. APPLICATION man mac. I3Li918.

Patented Sept. 14, 1920.-

3 SHEETS-SHEET 2- v liwcntor: lfarloweli'. T rumbul I by Q H. E. TRU'MBULL.

RIYVETING MACHINE. APPLICATION 'nuzo 0:0.13. 1-918.

1,352,851. r PatentedSept. 14,1920.

3 SHEETSSHEET 3.

liwcidnr:

& Jfarlow El'rwnbull,

by Mi lily.

RIVETING-MACHINE.

Specification of Letters Patent. Patgnted S pt- 14 1920 Application filed December 13, 1918. Serial No. 267.552.

To all whom it may concern:

Be it known that I, HARLOWE E. TRUMBULL, a citizen of the United States of America, and a resident of Amesbury, in the county of Essex and Commonwealth of Massachusetts, have invented certain new andfuseful Improvements in Riveting Machines, of which the following is a specification.

This invention relates to riveting machines and has for itsobject the production of a portable device of this character in which a plurality of blanks are intermittently and successively fed through the discharge orifice and in which the head of each blank is swaged or shaped as delivered from said orifice to give final shape thereto and provide a support'therefor while the opposite end of the blank is being upset.

The invention consists in a manually supported casing provided with a heating chamber through which are fed a plurality of blanks, preferably in a string, combined with devices for cutting olfthe foremost blank and simultaneously swaging or shaping a head thereon to give final shape thereto and provide a support therefor while the opposite end of the blank is being upset.

The invention further consists of certain novel features of construction and combination of parts which will be readily understood by reference to the description of the drawings and to the claims to be hereinafter iven. g a For the purpose of illustrating the invention, one preferred form thereof is illus trated in the drawings, this form having been found to give satisfactory and reliable results, although it is to be understood that the various instrumentalities of which the invention consists can be variously arranged and organized, and that the invention is not limited to the precise arrangement and organization of the instrumentalities as herein shown and described, except as required by the scope of the appended claims,

Of the drawings Figure 1 represents a plan of a machine embodying the features of the present invention. I

Fig. 2 represents a front elevation of the same with the various parts in position preparatory to feeding the blanks.

Fig. 3 represents a side elevation ofthe same.

Fig. 4 represents a front elevation with the parts in position after the blanks have been fed. Y

Flg. 5 represents a side elevation of the same with the parts in the position shown in Fig. 4.

Fig. 6 represents a vertical section of the same on line 6, 6, onl 'igs. 2 and 4.

F 1g. 7 represents a perspective of the devices for cutting off and heading the blanks, the parts being shown separated to permit the feeding of a new blank thereto.

Fig. 8 represents a similar view with the parts closedafter a blank has been severed from thestring of blanks, and

Fig. 9 represents an elevation of a string of blanks designed to be used in said machine.

Similar characters designate like parts I throughout the several figures of the drawings.

In the drawings, 10 1s a cylindrical casing having a plate 11 secured to the upper. end

thereof by means of a plurality of screws 12. The lower end of the casing 10has secured .thereto a closing cap 13 provided with a tubular extension 14. Within the casing 10 v is a heating chamber\ 15 having an exhaust passage 16 extending therefrom through a handle 17 formed upon the casing 10.

The casing 10 is provided with an ear 18 extending longitudinally of one side thereof, said ear having passages 19 and 20 extending therethrough, through which air and gas may be admitted through the pipes 21 and 22 when the valves 23 and 24 are open. The passages 18 and 19 communicate with a single passage 25 in which the air and gas is adapted to mix, the opposite ends of said passage being provided with a burner 26 through which the combustible mixture is adapted to be ejected.

When this combustible mixture is ignited,

the heating chamber 15 will be thoroughly heated and this heat will be transmitted to any metal object admitted to said cham-I ber 15.

Surrounding the upperjend of the casing 10 is a cage composed of two end plates 27 each of which has rigidly secured thereto a pair of bars 28, the outer'ends of which have reduced shanks 29 extending through openings 30 in the opposite end plate.

Beneath the top plate 11 and in contact therewith are two cutting members-31, each of these cutting members being dovetailed in and secured to an end plate 27 by a screw 32.

The outer ends of the cutting members 31 are adapted to be moved into contact with each other as indicated in Fig. 8 to cut off erally. extending trunnion 34, said -trun-'v nions extending through slots 35 in an operating lever 36 pivoted at 37 to the casin 10.

he lever- 36 is provided with ahandle 4 38 by which said lever may be moved about the pivot 37 to move the cutting members 31 into the position shown in Fig. 8jwhen it is desired to cut off a blank and swage or shape the head thereof or, separate said cutting members as shown in Fig.4? when it is desired to feed a new blank through the discharge orifice 39 in the plate 11.

The lever 36 is provlded with alateral projection 40 having formed therein a camslot 41, and in .said camslot 41 is positioned a pin 42 extendin laterally from the lower end of one arm 0 a lever 43 pivoted to the casing 10 at 44'.

The other arm of said lever 43 is provided with an opening 45 therethrough to receive one endofa connecting link 46, the opposite end ofwhich is pivotally connected to the outer end of the operating lever 47 drawings. interposed heating chamber: 15 and the. inner wall of Y ing transmitted to t casing 10.

of the feeding mechanism.

The tubular extension 14 of the cap 13 is provided with a tubular boss 48 extending into the cylindrical heating chamber 15 and fitting the inner wall thereof as indicated in Fig. 6 of the drawings.

Fixedly secured in the outer end of the tubular extension 14 is acylindrical member '49 having a similar member 50 in alinement"-'therew1th extending into the heating chamber-15 as indicated in Fig. 6 of the between the outer wall of the the casing -10 is a mass of asbestos or similar material which prevents the heat generated in the heatin' chamber 15 from be-. e outer surface of the .When the machine is in use, a string .of blanks 51, as indicated in Fig. 9, is. inserted into the:cylindricaTmembers 49, 50 and this string of blanks is intermittedly fed endwise. through the members 49, 50.and the.

swagmg or shaping devices 31, 33.

As theseblanks are fed through the heat-.

heating chamber 15 to the cutting off-and in chamber, the heat from the burner 26 wil bring the blanks to a white heat and into such condition that the foremost blank may be readily severed from the; remaining blanks and the head thereof simultaneouslg' swag-ed, or shaped.

T e cylmdrical member 49 and the tubular extension 14 has a s 0t 52 out therethrough 'to receive the fee ing claw 53, pivoted at 54 tothe bell-crank lever 47.

claw 53 is held The heel 55 of the feedingl normally in contact with t e projection 56 I by means-of the spring 57 When the cutters 31 are in the position indicated in'Fig. 8 of the drawin s, the lever 36 is in the position shown in ig. 2 of the drawings.

through the discharge orifice 39, the lever 36- is movedy-in the direction of the arrow a intotheposition shown in Fig. 4 of the drawings.

During the initial movement of the lever 36, the cutters 31 will be moved away from each other and by the time these cutters have been sufiiciently separated, the shoulder at the outer end of the slot 41 will come into contact with the pin 42 and move the lever 43 about its pivot 44 thus producingthe feeding of the string of blanks. The feeding claw 53 normally is in the position shown in Fig. 3 of the drawings but when the upper arm of the operating lever 47 is forced downwardl by the link 46 into the,

position shown in i 5 of the drawings, the claw w1ll be moved forward across the bore of the cylindrical member 49. During the forward movement of the claw 53 it will engage with a head 58 of a blank 51 and wi feed the string of blanks forward a distance sufiicient to bring the foremost blank into a position where 'it may be severed from the string of blanks upon the re turn movement of the lever 36 in a directlonoppositeto that indicated by the arrowa m Fig. 2 of thedrawings.

The casing 10 is provided With a removable cap 59 which closes a passage 60 to the heating chamber 15, said passage being adapted for use in lighting the combustible mlxture being ejected from the burner 26 when, it is desired to use the machine.

In the operation of the machine the cap ,When it is desired to feed another blank 59 is removed, the valves 23,-24 opened to Q admit a combustible mixtureto the burner 26 and this combustible mixture is ignited by a llghter inserted into the passage 60.

A strlng of blanks 51, 58*isthen inserted into the tubular extension 14 far enough to permit the feeding claw 53'to coact with the heads 58 thereof. i By manipulating the handle 38, the string of blanks may be fed into the heating chamber 15 passing through the flame from the burner 26.

During the passage of the blanks through the heating chamber 15, the said blanks are be ejected from the machine into the opening in the plates to be riveted.

When the foremost blank has been inserted in said opening, the handle 38 is then operated to move the cutting members 31 toward each other, this movement severing the foremost blank from the string of blanks and simultaneously swaging the head thereof, the shape of the head conforming to the shape of the depressions 33 in the outer faces of the cutting members 31.

To drive and head another rivet, the operation is repeated.

It is believed that the operation and many advantages of this invention will be fully understood without further description.

Having thus described my invention,- I claim 1. In a machine of the class described, the combination of a manually supported heater; means for feeding a partially headed blank through said heater; and a device forswaging thehead on said blank to give final shape thereto. I

2. In a machine of the class described, the combination of a heater; a supporting handle therefor; means for feeding a column of partially headed blanks through said heater; and a device for swagingthe head on each foremost blank to give final shape to said head and provide a support therefor while the opposite end of the blank is being upset.

3. In a machine of the class described, the combination of a heater; a supporting handle therefor; means for feeding a string of partially headed blanks through said heater; means for severing the foremost blank from said string; and means for swaging the head on said severed blank to give final shape to said head and provide a support therefor while the opposite end of the blank is being upset.

4. In a machine of the class described, the combination of a heater; a supporting handle therefor; means for feeding partially headed blanks through said heater; means for swaging the head on the foremost blank to give final shape to said head and provide a support therefor while the opposite end of the blank is being upset; and a single manually operated device for actuating said feeding and swaging means.

5. In a machine of the class described, the

combination of a heater; a supporting handle therefor; a tubular member extending partially through said heater; means for feeding a stringof partially headed blanks through said tubular member and heater; a cutting off device said cutting off device.

6. In a machine of the class described, the combination of a casing rovided with a heating chamber; a supporting handle therefor; a tubular member extending partially through said heater; a burner in said heater and means for actuating Y between the end of said tubular member and the delivery end of said machine; means for swaging the head on said blank to'give final shape to said head and provide a support therefor while the opposite end of the blank is being upset.

7 In a machine of the class described, the combination of a manually supportedcasing provided with a heating chamber; means for feeding a column of partially headed blanks through said heating chamber and subjecting said blanks in their movement through said heater to heat therein of a gradually increasing intensity;'and a device for swaging the head on each foremost blank to give final shape to said head and provide a support therefor while the opposite end of the blank is being upset.

8. In a machine of the class described, the combination of a manually supported heater having a centrally disposed cylindrical heating chamber; means for regulating the heat in said heater; means for feeding a string of partially headed blanks through the center of said heater from end to end; means for severing the foremost blank from said string; and means for simultaneouslyswaging the head on the foremost blank to give final shape to said head and provide a support therefor While the opposite end of the blank is being upset; and means for actuatmg said feeding and swaging means.

10. In a machine of the class described,

the combination of a manually supported casing having a centrally disposed cylindrical heating chamber; a tubular member extending into said heating chamber; means blanks through said tubular member into said heating chamber; coacting recipro- 'cating members for cutting ofiFa single blank at the outlet from said heating chamber;

andmeans for actuatin said cutting members at a predetermine time. v

11. In a machine of the class described,

the combination of a heating chamber;

means for feeding a string of partially headed blanks therethrough; two reciprocating members at 'the discharge end of said machine for cuttin offlthe foremost j blank; a'pivoted lever or operating said reciprocating members provided with a slotted extension; a device for' feeding blanks through said heating chamber between said reciprocating members; a bellcrank lever one arm of which is provided with a pin positioned inthe slot of said extension; and a link between the other arm ofsaid lever and said feeding device.

12. In a machine of the class described,

the combination of a heating chamber; 'means for feeding a string of partially headed blanks therethrough; two reciprocat- 191 ing members at the dischar e end of said machine for cutting ofli the oremost blank and provided with coacting depressions adapted to head a rivet; a-pivoted lever for operating said reciprocating members provided with a'slotted extension; a device for feeding blanks through said heating cham ber between said reciprocating members; abell-crank lever one arm of which is provided'with a pin positioned in the slot of said extension; and a link between the other arm of said lever and said feeding device.

13. In a machine of the class described, the combination' of a portable casingjprovidedwith a centrally disposed cylindrical heating chamber and alined inlet and outlet passages communicating with and in alinement with said chamber; means for feeding a partially headed blank throughsaid inlet passage into said heating chamber and subjectlng it to theheat therein; and means for giving a final shape to said head when delivered from said heating chamber, said shaping means being adapted to provide a support for the finished head whlle the opposite end of said blank is being upset.

Signed by me at 4. Post Oflice S duare,

Boston, Mass, this 3rd day of December,

8. v v ,HA'RLOWE EDSON TRUMBULL. v Witnesses:

v PAUL O. CURTIS,

\VALTER LOMBARD. 

